Nature of Business (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Nov. 26, 2018
Numerator for income (loss) per common share calculation:
Net income (loss) attributable to Hemisphere Media Group, Inc.	$ 33,358	$ (9,428)
Denominator for income (loss) per common share calculation:
Weighted-average common shares, basic	39,380	39,313
Effect of dilutive securities
Stock options and restricted stock	376
Weighted-average common shares, diluted	39,756	39,313
Income (loss) per share attributable to Hemisphere Media Group, Inc.
Basic	$ 0.85	$ (0.24)
Diluted	$ 0.84	$ (0.24)
Shares excluded from the computation of diluted income (loss) per common share	2,500,000	1,600,000
Outstanding awards excluded from computation of diluted loss per share		500,000
Snap Media
Nature of business
Equity interest acquired (as a percent)			75.00%
PANTAYA
Nature of business
Equity interest owned prior to transaction (in percent)	25.00%
Purchase price	$ 123,605
Equity interest acquired (as a percent)	75.00%